Blanket winding for a printing cylinder



` 2 Sheets-mae?l 1 l. TORNBERG BLANKET wINDING `Non A PRINTING CYLINDER original Filed May 18, '1936Y July 4, 1939. y

July 4, 1939. l. TORNERG BLANKET WINDING 1FOR. A PRNTING CYLINDER 2 sheets-sheet 2 Original Filed May 18. 1936 ,W z Je h Patented July 4, 1939 ,BLANKET WINDING .roaa-nnmrmo.

CYLINDERY lIsdorTornber-g, Plainfield, N. J., assignor to Wood "NewspaperiMachinery CcrporatiomNew York, N. Y.; a corporation of #Yinfgrinia original application .May18,111936Qseria1 No. 80;.295. Dividel'and this applicationDecember 231, 1936, Serial rN"o.j118;5.20. -Renewed Novem- This is a division of my application for-patent oni-Reel'zrod -foraepiinting cylinder, led May 18, 1936, Serial No. 80,295. n

The principal objects of this invention are to provide a reel rod for an impression cylinder, or the like, which can be manipulated to enable it to grasp the end of the blanket or draw sheet in a very simple manner; to provide means whereby the blanket or draw sheet can be reeled in either direction, and to provide means whereby the blanket, if wound in a skewed position, can be rendered straight by moving one end of the reel rod in whatever direction is required by means, preferably, of an eccentric adjustable bushing in one end of the rod.

Other objects and advantages of the invention will appear hereinafter.

Referentce is to be had to the accompanying drawings which show a preferred embodiment of this invention.

Fig. l is a side elevation of part of an impression cylinder of a printing press with a preferred embodiment of this invention applied thereto;

Fig. 2 is a sectional View on the line 2 2 of Fig. 1;

Fig. 3 is an end view of the operating mechanism; and

Figs. 4 and 5 are details of the eccentric bushmg.

The impression cylinder of a. printing press is commonly covered with packing in order that the printing may be made clear and distinct. The usual type of packing or covering is applied by hanging one end of the covering over pins or clamping means and reeling up the other end on a reel rod.

It is di'icult to place the reeled up end of a blanket or draw sheet squarely so that it will be drawn up with equal tightness on both edges; moreover, sometimes the blanket itself is not entirely symmetrical and, in any case, it is diicult to attach the blanket or draw sheet to the reel rod in a sufficiently square manner to enable the sheet or blanket, when drawn firmly over the surfaces of the cylinder, to lie rmly at all pointsv against the impression cylinder. If it does not it will cause defects in printing. 'I'his invention is designed to overcome these diculties by changing the position of the end of the forward operating reel rod to take out the skew of the blanket.

'Ihe printing cylinder I carries a reel rod 2, loosely mounted at one end, in a hole 3, the other end being mounted in a rotatable eccentric bushing 4. The eccentric bushing 4 has a flange on its left hand end, as viewed in Fig. 1, and is mount- Yedinanendfplatel--whichlatter-is secured Yto this I cylinder -I by-screws I5. A wormrwheelllis Isecured to-:thebushingfl and, in cooperation --with the flange mentioned above, holds the bushing 4 against end motion. The worm wheel 8 is se- 5 cured to the eccentric bushing 4 and meshes with a worm 9 carried in a hole I0 of the cylinder I and a poppet l I secured to the end plate 5. A collar I2 is pinned to the worm 9. As viewed in Fig. 3 a non-circular member I3 is provided for rotating the worm 9.

It is apparent that, by rotation of this worm, the eccentric bushing 4 may be rotated to throw the end of the, reel rod 2 out of alignment with the axis of the cylinder I. This action may be used to correct any looseness in the draw sheet I4 which is Vwrapped around the reel rod 2.

A hub I of the poppet II is provided for the mounting of a pawl I5, a washer I1 and appropriate screw holding the pawl in place. The pawl I5 cooperates with a ratchet wheel I8 carried on a non-circular member I9 of the reel rod 2. A pin 29 serves to keep the ratchet wheel I8 in place on the non-circular member.

An oppositely disposed pawl 2| mounted by a poppet 22 on the end plate 5 is furnished to permit the draw sheet I4 to be operated in a counterclockwise direction as viewed in Fig. 3. When this action is desired the pin 20 is removed and the ratchet I8 reversed so that it will coop-erate with the pawl 2 I.

The other end of the draw sheet or blanket can be placed over blanket pins 21 or be held by tympan clamp ngers 28 carried on a tympan rod 29 journaled in a hole 30 of the cylinder I and end plate 5. These tympan clamp fingers 28 are riveted to the tympan rod 29 by rivets 3 I An arm 32 is secured to the end of the tympan rod 29 and has its free endI bifurcated to accommodate an eye-bolt 33. One end of the eye-bolt is pivoted by a stud 34 on the end plate 5, and the other end carries a half round pin 35 cooperating with a complementary surfaceof the arm 32. A nut 36, in cooperation with the half round pin 35, can be used to force the arm 32 and tympan rod 29 in a clockwise direction, as shown in Fig. 3. This presses the tympan clamp fingers 28 against a surface 31 of the cylinder I to thereby clamp the draw sheet or blanket. Tympan clamp pins 38 are provided, entering holes in the tympan clamping ngers 28, to assist in holding the draw sheet or blanket.

It is thus apparent that a new and useful dey Vice is provided for throwing the reel rod out of alignment with the axis of the printing cylinder to insure the draw sheet or blanket being held rmly against the surface of the impression cylinder.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. A reel rod for a printing cylinder, capable of winding up thereon a blanket or draw-sheet, and having one end loosely supported and the other end eccentrically mounted, and means for rotating said rod.

2. In a printing cylinder, the combination of an eccentrically mounted worm wheel, a reel rod carried at one end on said cylinder and loosely mounted at the other end on said cylinder, and a hand operated worm for turning the worm wheel to skew the position of the reel rod.

3. In a device for winding up a blanket or draw sheet on a printing cylinder, the combination of a reel rod having means for holding the end of 'the flexible blanket or draw sheet, a movable support for one end of the reel rod, and means for moving said reel rod support to throw the reel rod out of alignment with the printing cylinder.

4. The combination of an eccentrically mounted worm wheel, a rotatable reel rod carried at one end thereby and loosely mounted at the other end, a hand operated worm for turning the worm wheel to skew the position of the reel rod, and means whereby the reel rod is capable of being turned in either direction.

5. In an operating device for a reel rod, the combination with the reel rod, of a ratchet on its end, a non-circular member, a pawl engaging the ratchet for holding the reel rod against turning backwardly in one direction when the blanket is being wound thereon, a pin by which the ratchet is connected to the non-circular member, means for throwing the reel rod out of alignment with the printing cylinder, and a second pawl for holding the ratchet against moving in the opposite direction.

ISIDOR TORNBERG. 

